3951990572 has 24 divisors (see below), whose sum is σ = 7158864384. Its totient is φ = 1907442432.

The previous prime is 3951990529. The next prime is 3951990599. The reversal of 3951990572 is 2750991593.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 3951990572.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86333 + ... + 123924.

It is an arithmetic number, because the mean of its divisors is an integer number (298286016).

Almost surely, 2^3951990572 is an apocalyptic number.

It is an amenable number.

3951990572 is a deficient number, since it is larger than the sum of its proper divisors (3206873812).

3951990572 is a wasteful number, since it uses less digits than its factorization.

3951990572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210425 (or 210423 counting only the distinct ones).

The product of its (nonzero) digits is 765450, while the sum is 50.

The square root of 3951990572 is about 62864.8595958028. The cubic root of 3951990572 is about 1581.0246214068.

The spelling of 3951990572 in words is "three billion, nine hundred fifty-one million, nine hundred ninety thousand, five hundred seventy-two".